I don't see how vegetarianism even plays a part in this discussion. I'm not a vegetarian, but this offends me. I'm offended by Parson's bravado and his claim that "Of everything I do this is the most rewarding."

Parson kills an animal under the guise of crop protection and to feed a village. Were I watching a local hunt for this elephant to feed their family I would feel that the death was justified. But we're really just watching a rich westerner tramp around in the dark so he can fire a gun.

Is this really the most rewarding thing Parson could think to do for local villagers in Zimbabawe? And even if so, I would expect some more humility from someone who claimed their actions were so noble.